CVE-2026-34601

CVE-2026-34601 · xmldom: XML injection via unsafe CDATA serialization allows attacker-controlled markup insertion

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xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In xmldom versions 0.6.0 and prior and @xmldom/xmldom prior to versions 0.8.12 and 0.9.9, xmldom/xmldom allows attacker-controlled strings containing the CDATA terminator ]]> to be inserted into a CDATASection node. During serialization, XMLSerializer emitted the CDATA content verbatim without rejecting or safely splitting the terminator. As a result, data intended to remain text-only became active XML markup in the serialized output, enabling XML structure injection and downstream business-logic manipulation. This issue has been patched in xmldom version 0.6.0 and @xmldom/xmldom versions 0.8.12 and 0.9.9.

CVSS 7.5 · Высокий · EPSS 0,5% · Есть исправление

Опубликовано

2026-04-02T17:47:13.209Z

Обновлено

2026-07-15T01:04:09.128Z

Стек: system · node

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